Accession Number:

ADA278285

Title:

Ultrastructure Processing of Advanced Materials.

Descriptive Note:

Final technical rept. 1 Dec 90-30 Nov 93,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

• Mackenzie, John D.

Report Date:

1994-01-01

Pagination or Media Count:

27.0

Abstract:

This Final Technical Report covering the three-year period from December 1, 1990 to November 30, 1993 presents a summary of research performed on two classes of materials obtained by the sol-gel method. Single crystal thin films were successfully prepared for the, ferroelectric materials KNbO3 and LiNbO3. A new phenomenon, Amorphous Ferroelectricity was discovered. Organically Modified Silicates Ormosils were further developed to give enhanced high temperature rubbery elasticity. A theory was developed for the calculation of the hardness of Ormosils. By modifying the Ormosils with Ti, Zr and Al to replace Si, Vickers Hardness of over 200 Kgsq mm 2 was obtained. This is about ten times that of the hardness of the hardest transparent organic plastics. Sol- Gel Science, Ferroelectrics, Organically modified ceramics.

Descriptors:

• *THIN FILMS
• *SINGLE CRYSTALS
• *FERROELECTRIC MATERIALS
• TEMPERATURE
• MODIFICATION
• LITHIUM
• OXIDES
• SILICON
• NIOBIUM
• TITANIUM
• FERROELECTRICITY
• POTASSIUM
• SILICATES
• HARDNESS
• PLASTICS
• COVERINGS
• ZIRCONIUM
• ORGANIC MATERIALS
• ALUMINUM
• CERAMIC MATERIALS
• COMPOSITE MATERIALS
• HIGH TEMPERATURE
• ELASTIC PROPERTIES

Subject Categories:

• Organic Chemistry
• Laminates and Composite Materials
• Plastics
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE